ENVS 2040 Lecture Notes - Lecture 10: Hemiptera, Herbivore, Carl Linnaeus
17 Mar 2017
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Learning objectives: what is voltinity, history of pest management. Voltinity refers to the number of generations (egg to mature adult) that occurs per seasonal cycle. Scientists are interested in how many lifecycles can occur in one seasonal cycle. Univoltine refers to one generation per seasonal cycle. The seasonal cycle and the lifecycle have the same time span. Univoltine has minimal generation overlap as all lifecycles of a species is occurring at the same time. All the eggs would be laid at one time and they would all hatch around the same time of each other and they would enter all life stages at the same time. An example of a univoltine species is the corn rootworm. Multivoltine refers to species that have more than one generation per seasonal year. There can be several life cycles occurring in one seasonal cycle. There is an overlap of generations as there are different life cycles occurring at the same time.
